Internal-combustion engine.



No. 896,183. I PATENTED AUG. 18', .1908

L. s. WAT RS, INTERNAL COMBUSTION ENGINE.

APPLICATION FILED JULY'ZQ; 1904.

WITNESSE SL v I lNNENT OVR 9 fim'dww i ATTORNEY I bcr m, connecting LEWIS S. WATRES, OF SORANTON. PENNSYLVANIA, ASSIGNOR OF FIFTY-ONE-ONE- HUNDREDTHS TO ROBERT C. ADAMS,

OF SGRANTON, PENNSYLVANIA.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented Aug. 18, 1908.

Application filed July 29, 1904. Serial No. 218,680.

To all w/zom it may concern. Be it known that I, LEWIS S. VVATRES,-a citizen of the United States, residing at Scranton, county of Lackawanna, Pennsylvania, have invented certain new and useful Improvements in InternaLCombustion Engines, of which the following is a specification.

This invention relates to internal combustion engines of the two-cycle type, and its object, as hereinafter appears, is to improve the operation.

1n the accompanying drawing Figure 1 is an elevation partly in section illustrating an upright engine; Fig. 2, a section on the line 2-2 of Fig. 1; and Fig. 3, a vertical section through the cylinder, showing the piston therein.

The cylinder a is shown with the usual water jacket, and has at its outer end internal grooves b which are preferably inclined or curved as shown. On the inner face of the piston are inwardly projecting posts 0 arranged parallel with the axis of the cylinder, and supporting upon their inner ends a perforated plate d. The inner end of the cylinder is formed with an annular groove e, beyond which is a c hambcr f from which the exhaust passage 9 leads.

g is the exhaust valve, normally seated by its spring and opened at thepro er time by means of the 0 am 9 on or driven y the main shaft. The products of combustion are exhausted through a box 9 through which passes a vaporizer h. The outer end of the vaporizer is provided with an inlet i for gasolene or other liquid fuel and an. inlet 7' for air,

entrance of liquid fuel being normally prevented by spring valve is, which may be positively actuated from the engine shaft at the roper time, or which may be. a suction valve. oci and air admitted pass through the coneshaped vaporizer into the compression chamby passages m with the in terior of the cylinder, and intowhich open the lower ends of the grooves b. The volume of explosive mixture. admitted is determined by a gate valve n, whose spring tends to hold it open, but which is closed at the pro or time by cam n on the main shaft. he chamber m may be made of a capacity to afford desired compression of the charge in it.

0 indicates an ordinary spark plug projecting into the chaiiiberf. The operation'is as follows: As the piston moves inwardly, and after its leading edge has passed beyond the upper ends of the channels 7/, air and liquid fuel are admitted, the valve 7r, being opened either by suction or positively by a moving part of the engine, and at the proper point in the inward movement of the piston the gate valve n .is closed. On the outward stroke of the piston, the charge thus admitted is subjected to compression until the inner edge of'the piston opens the channels 6, when the charge under v compression will enter through the channels into the s ace between. the innerface of the piston and the perforatedplate d. The i-nclinationor curve of the channels I) imparts to the charge so entering the cylinder :1. gyratory motion, and the perforated plate acts to lis-.

tribute the entering charge so that it is thoroughly mixed and enters the cylinder beyond the plate substantially or entirely uniformly throughout the whole cross section of the cylinder, acting, as-is Well understood, to drive out products of combustion of the previous charge, the exhaust valve 9 being timely opened by the cam g and permitted to close under the reaction of its spring when the pis ton has advanced to the proper point andv theunexploded charge now inthe cylinder has been compressed. plate (Z comes into the 1plane of the annular recess 6, equalization o the pressure of the compressed charge, if there be any difference, will take place around theedges of the plate; as well as through the perforations thereof, immediately following which the charge is exploded by the sparken v i g I claim as my invention: 1. In a two cycle internal combustion en:

As the perforated gine, the combination-of a compression cham-- ber to which the explosive,mixtlfr''isadmia' ted, a cylinder having grooves in its'inncr walls arranged on opposite sides of its axis 1 which communicate with the compression chamber and terminate in the/outer portion of the cylinder, an, exhaust valve at th e- .igni- .tion end of the cylinder, a piston and an annular perforated plate of substantially the diameter of the piston carried by'and sup ported a short distance fromthe face of the piston between which and the piston the explosive mixture enters from opposite sides of the cylinder and from which it passes through the perforated plate to scavenge the cylinder.

2. Ina two cycle internal combustion engine, the combination of a compression cham' her to which the explosive mixture is admitted, a cylinder having inclined grooves in its inner walls arranged on opposite sides of its axis which communicate with the compression chamber and terminate in-the outer portion of the cylinder, an exhaust valve at the ignition end of the cylinder, a piston and an annular perforated plate of substantially the diameter of the piston carried by and sup orted a short distance from the piston and Between which and the piston the explosive mixture enters from opposite sides of the cylinder and from which 1t passes through the perforated plate to scavenge the cylinder.

3. In a two-cycle internal combustion engine, the combination with-a cylinder having internal channels in its inner face at its outer end and an annular enlargement at its inner end, and connected with a chamber within which the entering charge is initially compressed and with which said channels com munieate, a moving with t e piston and separated an appropriate distance from its inner face, and occupying the annular enlargement when the piston is in its inner position.

In a two-cycle internal combustion engine, the combination with a cylinder having 'iston and a perforate plate an. annular enlargement at its outer end, of a piston carrying a perforate plate supported an appropriate distance from the inner face of the piston and occupying the annular ene largement when the piston is in its inner position, substantially as set forth.

In testimony whereof I. have hereunto snhscribed my name.

, LEWIS S. WATRES Witnesses:

E. F. PORTER,

L. F. BROWNING. 

